last executing test programs:

400.112958ms ago: executing program 0:
ioctl(0xffffffffffffffff, 0x0, &(0x7f0000000000))

323.94712ms ago: executing program 2:
setsockopt(0xffffffffffffffff, 0x0, 0x0, &(0x7f0000000000), 0x0)

207.865127ms ago: executing program 1:
getsockopt(0xffffffffffffffff, 0x0, 0x0, &(0x7f0000000000), &(0x7f0000000000))

90.193136ms ago: executing program 0:
write(0xffffffffffffffff, &(0x7f0000000000), 0x0)

0s ago: executing program 2:
sendmsg(0xffffffffffffffff, &(0x7f0000000000), 0x0)

kernel console output (not intermixed with test programs):

Warning: Permanently added '10.128.0.117' (ED25519) to the list of known hosts.
2024/06/19 10:30:45 fuzzer started
2024/06/19 10:30:45 dialing manager at 10.128.0.163:30035
[   58.990583][ T5090] cgroup: Unknown subsys name 'net'
[   59.270107][ T5090] cgroup: Unknown subsys name 'rlimit'
[   60.373577][ T5092] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
2024/06/19 10:30:51 starting 3 executor processes
[   65.042110][ T2845] 
[   65.044619][ T2845] =============================
[   65.049846][ T2845] WARNING: suspicious RCU usage
[   65.054878][ T2845] 6.10.0-rc3-syzkaller-00717-g6f46fc9bc2bd #0 Not tainted
[   65.062360][ T2845] -----------------------------
[   65.067526][ T2845] net/netfilter/ipset/ip_set_core.c:1200 suspicious rcu_dereference_protected() usage!
[   65.077330][ T2845] 
[   65.077330][ T2845] other info that might help us debug this:
[   65.077330][ T2845] 
[   65.088032][ T2845] 
2024/06/19 10:30:52 SYZFATAL: failed to recv *flatrpc.HostMessageRaw: EOF
[   65.088032][ T2845] rcu_scheduler_active = 2, debug_locks = 1
[   65.096198][ T2845] 3 locks held by kworker/u8:11/2845:
[   65.101592][ T2845]  #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[   65.112848][ T2845]  #1: ffffc90009d57d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[   65.123694][ T2845]  #2: ffffffff8f5da0d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0
[   65.133576][ T2845] 
[   65.133576][ T2845] stack backtrace:
[   65.139741][ T2845] CPU: 1 PID: 2845 Comm: kworker/u8:11 Not tainted 6.10.0-rc3-syzkaller-00717-g6f46fc9bc2bd #0
[   65.150269][ T2845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[   65.160437][ T2845] Workqueue: netns cleanup_net
[   65.165608][ T2845] Call Trace:
[   65.168923][ T2845]  <TASK>
[   65.171962][ T2845]  dump_stack_lvl+0x241/0x360
[   65.176668][ T2845]  ? __pfx_dump_stack_lvl+0x10/0x10
[   65.181903][ T2845]  ? __pfx__printk+0x10/0x10
[   65.186537][ T2845]  lockdep_rcu_suspicious+0x221/0x340
[   65.191945][ T2845]  _destroy_all_sets+0x232/0x5f0
[   65.196929][ T2845]  ip_set_net_exit+0x20/0x50
[   65.201548][ T2845]  cleanup_net+0x802/0xcc0
[   65.205999][ T2845]  ? __pfx_cleanup_net+0x10/0x10
[   65.211096][ T2845]  ? process_scheduled_works+0x945/0x1830
[   65.216857][ T2845]  process_scheduled_works+0xa2c/0x1830
[   65.222473][ T2845]  ? __pfx_process_scheduled_works+0x10/0x10
[   65.228676][ T2845]  ? assign_work+0x364/0x3d0
[   65.233306][ T2845]  worker_thread+0x86d/0xd70
[   65.238131][ T2845]  ? _raw_spin_unlock_irqrestore+0xdd/0x140
[   65.244043][ T2845]  ? __kthread_parkme+0x169/0x1d0
[   65.249078][ T2845]  ? __pfx_worker_thread+0x10/0x10
[   65.254197][ T2845]  kthread+0x2f0/0x390
[   65.258266][ T2845]  ? __pfx_worker_thread+0x10/0x10
[   65.263487][ T2845]  ? __pfx_kthread+0x10/0x10
[   65.268120][ T2845]  ret_from_fork+0x4b/0x80
[   65.272533][ T2845]  ? __pfx_kthread+0x10/0x10
[   65.277326][ T2845]  ret_from_fork_asm+0x1a/0x30
[   65.282390][ T2845]  </TASK>
[   65.296755][ T2845] 
[   65.299137][ T2845] =============================
[   65.303994][ T2845] WARNING: suspicious RCU usage
[   65.309021][ T2845] 6.10.0-rc3-syzkaller-00717-g6f46fc9bc2bd #0 Not tainted
[   65.316221][ T2845] -----------------------------
[   65.321134][ T2845] net/netfilter/ipset/ip_set_core.c:1211 suspicious rcu_dereference_protected() usage!
[   65.330795][ T2845] 
[   65.330795][ T2845] other info that might help us debug this:
[   65.330795][ T2845] 
[   65.341125][ T2845] 
[   65.341125][ T2845] rcu_scheduler_active = 2, debug_locks = 1
[   65.349570][ T2845] 3 locks held by kworker/u8:11/2845:
[   65.354971][ T2845]  #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[   65.366231][ T2845]  #1: ffffc90009d57d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[   65.377358][ T2845]  #2: ffffffff8f5da0d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0
[   65.387203][ T2845] 
[   65.387203][ T2845] stack backtrace:
[   65.393128][ T2845] CPU: 0 PID: 2845 Comm: kwo